I'm using jQuery and I want to check the existence of an element in my page. I have written following code, but it's not working: ...

...ariant functor out of it, but not a (covariant) functor. Try writing fmap and you'll fail. Note that the contravariant functor version is reversed: fmap :: Functor f => (a -> b) -> f a -> f b contramap :: Contravariant f => (a -> b) -> f b -> f a A type constr...

I've just started using Grunt.js . It is pretty hard to set up and I am at the point of creating a package.json file. 6 ...

... The browser will zoom if the font-size is less than 16px and the default font-size for form elements is 11px (at least in Chrome and Safari). Additionally, the select element needs to have the focus pseudo-class attached. input[type="color"], input[type="date"], input[type="datet...

...e that won't save you anything unless you add a bunch of cdef declarations and thereby introduce static typing (otherwise you just juggle opaque PyObject * stuff). And it will never get quite as fast as plain C because it's usually interfacing with Python (100% or more? only for plain numerical code...

i have downloaded new xcode-5 and just started using it. 6 Answers 6 ...

... Stashing, temporary commits and rebasing may all be overkill. If you haven't added the changed files to the index, yet, then you may be able to just checkout the other branch. git checkout branch2 This will work so long as no files that you are editi...

Is there a real way to get Netbeans to load and work faster? 29 Answers 29 ...

...dely used in events declaration, but when should I use them in my own code and why are they useful? why not to use something else? ...

... awk '{print $4}' which should return (for example) 8 (whereas the command above would return 16) share | improve this answer | follow | ...